spark gap spacing

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Shaun Epp by way of Terry Fritz <twftesla-at-qwest-dot-net>" <scepp-at-mts-dot-net>

Hello Again,

I Have another question,

Does anyone have more exact information to setup the gap distances on a 12Kv
at 60mA neon sign powered tesla coil, I've seen the SGapVolt.jpg file on
Terry's web page under misc and its kinda rough, but interesting.  Anyway,
I'm looking for the safty gap distances to ground, and the main spark gap
distance for a 2 gap (I hope 2 is enough) spark gap using 3/8 inch tungsten,
flat surface, oh and the safty gaps are ~3/8 inch brass balls.

I know I've seen the equation for  Kv/cm spark jump somewhere, but it
doesn't include electrode shape, and I figure that there is lots of people
out there using very similar hardware so I'm hoping I don't have to do it
trail and error.  :-)

BTW.  I was thinging of using Drill bits to gap my spark gaps,  does this
work well??

Thanx,   Shaun Epp